Direct Reading (Continuous) Monitors
These analyzers run 24 hours a day, seven days a week, and data is collected by a data acquisition system. The instruments are housed in temperature-controlled shelters. Ozone, sulfur dioxide, oxides of nitrogen, and mercury are analyzed in the Kentucky network using continuous monitors.
Typical Air Monitoring Shelter Continuous Monitors and Data Acquisition System
This method of monitoring involves collecting a sample of air onto a filter or within a summa canister for 24 hours. The sample is then analyzed by a laboratory. Particulate matter (PM10, PM2.5), lead, and air toxics samples are collected using manual methods.
PM2.5 Sampler Air Toxics Sampler
Continuous sampling instrumentation is a hybrid of direct reading monitors and manual samplers. With this type of monitoring, a sample is collected over a short period of time and then is processed by additional instrumentation either included in or attached directly to the sampler. PM2.5 data is collected in this manner.